My husband and I have had to get larger beds as we have gotten larger and older :-) but we're still in the same bed. Sometimes I would like separate twins instead of the king but mostly because we have linen trouble:

Beware of friends turned into lovers
They'll steal your heart and then your covers.

When we go on vacation/travel out of town and are in hotels, we usually, now, get at least two "rooms", the bedroom and a "living room" because I cannot sleep with the light on and go to bed earlier than my husband does. Other than that, he is a bit easier to sleep with than I suspect I am but then, he sleeps easier than I do because of his medicines/particular makeup.

Could you go to sleep earlier or have him get up earlier so you have the room/bed to yourself? I tend to go to bed earlier (but right now I'm reading long after he's come to bed so he's putting up with my light) and he gets up earlier so I have a chance to get to sleep or get back to sleep if I have a sleeping problem any given night.

We only have a TV in our living room and I bought us a sofa bed for the couch for the living room in case either of us got sick and we needed two beds or one of us was unable to climb the townhouse stairs, etc. Maybe you could just get a sofa bed or something like that and take turns seeing who wanted to be where, when? We have two bedrooms but the front one has the cats and their litter boxes, etc. and other problems so it is not a "bedroom". But thinking about it, I would be lonely being in a separate bedroom completely. I get annoyed at my husband's snoring but I'll take that over not being able to reach out and touch him or waking and his being elsewhere. As pleasant as it is to wake in the morning and realize he's gone downstairs already and the bed's all mine for another hour or two, I also miss him. It's a mixed blessing for me :-)